farmer



(No Model.)

M. G. FARMER.

MEDICAL RUB'B-ING APPARATUS.

No. 317,327. Patented May 5, 1885.

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IUNTTED STATES PATENT OFFICE.

MOSES G. FARMER, OF NEW YORK, N. Y.

M EDICAL RUBBING APPARATUS.

SPECIFICATION forming-part of'Letters Patent No. 317,327, dated May 5, 1885.

Application filed October 14, 1884. (No model.)

.To all whom, it may concern:

Be it known that I, MosEs G. FARMER, a citizen of the United States, residing in New York, in the county and State of New York, have invented certain new and useful Improvements in Rubbing Apparatus for Medical Purposes, of which the following is a specitication.

My invention relates to a class of apparatus employed for artificially producing oscillating or Vibrating movements for the purpose of rubbing the human body to aid in the recovery of health.

The object of the invention is to provide convenient means for deriving from the rotary movementof a motor the horizontal movement of a suitable rubbing device, and to give to the brush a movement very nearly resembling that which is manually applied to patients.

The invention consists in applying to a revolving shaft an eccentric wheel or cam which, when revolved, communicates a reciprocating movement to an arm attached thereto or coupled therewith. This arm in turn actuates a pivoted lever in such a manner as to impel it rst in one direction and then in the opposite direction. The last-named lever is pivoted at a central point to a suitable support, and at its remaining extremity to an arm designed to carry the rubber. A parallel lever or link is also applied to this arm, and is pivoted to a stationary support in such a manner as to permit a longitudinal movement of the arm. Any suitable form of rubber or brush may be carried in this arm or holder. It will be apparent that the movement of the brush will not be in a direct line, but that at some point in its movement it will be in an extreme forward plane, while at the limits it will be drawn backward-in other words, the movement of the brush will be substantially in the are of a circle having a diameter dependent upon the length of the supporting-arms. A great advantage is derived from this, for the operation upon the patient is much more effective.

In the accompanying drawings, Figure lis a side elevation of such parts of the apparatus as are necessary to illustrate my invention, and Fig. 2 is a plan view of the same.V

Referring to the drawings, A represents a 'rubber E which it is desired to actuate.

revolving shaft which may be actuated in any convenient manner. At the end of this shaft there is carried an eccentric wheel or cam, a, of well-known construction, and around this cam there is fitted a ring, b, formed at the extremity of a link or pitman, B. The revolution of the shaft A will, it is evident, cause the link or pitman to be moved to and fro in the direction of its length. The remaining extremity of the arm B is pivoted to one arm of the lever C at any one of a series of points, c, in such a manner that it may conveniently uncouple and be moved from one point to another. The arm G is pivoted at a point, c', to a stationary frame, E, which may conveniently constitute a support for the shaft A.

The arm D is designed to hold the brush or The arm D is supported at or near one end by an extension of the lever C, and at a second point by means of a link, e, which is parallel to the lever C. The link e is pivoted at one end to the frame or stationary support E and at its other end to the arm D. By means of these two supports it will be evident a longitudinal movement of the arm D will be occasioned when the lever or arm C is actuated, and although the arm D will be parallel to its points of support, yet it will be moved into different planes, according tothe angle atwhich the link e and the lever C are placed with reference to the arm D,

One extremity of the arm D is preferably provided with an arm, le, extending downward, as shown, and in this extension there are placed suitable set-screws, 7c', which extend inward toward an opening, k2, formed in the extension. Into the opening k2 it is designed that the ends of suitable rubbers or brushholders, K, shall be inserted, and the screws serve to bind the latter securely in position. rllhe holders Kmay be turned in their respective sockets k2, and thus moved about on axes parallel with the arm D, so that they may be more readily applied to the different parts to be rubbed.

It will be evident from the foregoing description that when the shaft A is revolved and the upper extremity of the arm Gis moved to and fro the brushes or rubbers will be driven to and fro in an approximately con- IOC stant plane, but that at'some point, preferably near the center of its movement in each direction, the brush or rubber will be at an extreme downward position, Whereas at the limits of its reciprocating movement it will be in planes slightly higher than the same. This change in the position of the rubber is desirable for the purpose of obtaining` an articial rubbing` very nearly resembling that which is manually applied to patients.

I claim as my invention-- 1. The combination, substantially as hereinbefore set forth, With a revolving shaft and a pitman receiving therefrom a reciprocating movement, substantially as described, of a pivoted lever actuated by said pitman, allorizontal moving arm actuated by said lever, means for supporting said arm, and a rubber or brush carried in said4 arm, substantially as described.

2. The combination, substantially as hereinbefore set forth, with asupporting-frame, a revolving` shaft, and a pitman receiving therefrom a reciprocating movement, of the arm D, the lever pivoted near its respective ends to said pitrnan and said arm and at a central point to a supporting-frame, the supportinglinlr e, pivoted to said frame and to said arm at its respective ends, the brush or rubber F, and means, substantially such as described, for securing` said brush to said arm.

In testimony whereof l. have hereunto subscribed my name this 26th day of August, A. D. 1884.

MOSES G. FARMER.

vWitnesses:

DANL. XV. EDGECOMB, GHaRLns A. TERRY. 

